MIL-DTL-38999 Series I connectors offer a robust solution for harsh environments, featuring up to 128 contacts in a sealed insert. With an operating temperature range spanning from -65 °C to 200 °C, these connectors are built to withstand extreme conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for reliable connectivity. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS compliant finishes, these connectors ensure durability and performance. Suitable for military and industrial applications, they come in different mounting options, like front wall, rear wall, and jam nut receptacles, with RFI grounding plugs. Whether for box or through bulkhead mounting, the MIL-DTL-38999 I connectors provide a secure and efficient electrical connection, backed by a mating life of 500 cycles.